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Lana71 [14]
3 years ago
6

DNA is double stranded helix, connected by what could be described as "ladder rungs". These rungs are actually nucleotides, the

building blocks of DNA. A sequence of three of these nucleotides is known as a codon. Codons are important in the composition of proteins, because each codon calls for a specific
Biology
2 answers:
marta [7]3 years ago
5 0
the codon calls for a specific amino acid
cricket20 [7]3 years ago
3 0

Answer:

Codons are important in the composition of proteins, because each codon calls for a specific amino acid.

Explanation:

The genetic message contained in the DNA is formed by an alphabet of four letters that correspond to the four nucleotides: A, T, C and G.

With these four letters it is necessary to form "words" that have the meaning of "amino acids".

The genetic code of DNA is expressed by broken bases, which were called codons. Each codon, formed by three letters, corresponds to a certain amino acid.

The correspondence between the trio of bases of DNA, the trio of bases of RNA and the amino acids specified by them constitutes a message in code that came to be known as "genetic code".

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On topographic maps, how does the spacing of contour lines relate to continental and ocean-floor topography? A. For both contine
Trava [24]

For both continental and ocean-floor topography, gentler slopes are represented by widely spaced lines while steeper slopes are represented by closely spaced lines.

Explanation:

The contour lines are one of the main, and one of the most used methods on the maps for representing the topography. Basically, the contour lines are closed lines that connect dots on the same elevation. It may sound very simple, but they do provide good insight into the topography, especially if the reader of the map knows how to interpret them well.

The contour lines are used both for continental and ocean-floor topography. The rules are the same for both, including the representation of the slopes. When a slope is gentler, the contour lines are more widely spaced. When a slope is steeper, the contour lines are much more closely spaced.

Some elements of the contour lines or that go with them to give better representation are:

  • black dots (representing a top)
  • thicker lines (every fifth, so that the counting is faster and easier)
  • small lines with given direction (representing cliffs or highly steep slopes)
  • numbers (providing information about elevation)

Learn more about contour lines brainly.com/question/1972242

#learnwithBrainly

4 0
3 years ago
A man with normal vision marries a color-blind woman. Red-green color blindness is an X- linked recessive disorder. They have a
jeyben [28]

Answer: The probability is 100%.

Explanation: The chromosome X is related to gender. A man carries two different chromosomes (XY) and a woman carries two similar chromosomes (XX). The offspring of a couple will inherited:

  • If it is a boy, he inherites the chromosome Y from his father and X from his mother;
  • If it a girl, she inherites X from her father and X from her mother;

In the question, the woman is color-blind, which means she carries the recessive alleles: X^{d}X^{d}

The man, on the other hand, is normal, so his X-linked genotype will be: X^{D}Y.

Now, since they have a daughter, she inherited her double X from each of her parents, which means she inherited one X^{d} from her mother and one X^{D} from her father.

So, the daughter's genotype can only be heterozygotic  X^{D}X^{d} in other words, the probability is 100%.

5 0
3 years ago
What are the strengths and weakness of gel electrophoresis ?
topjm [15]

Answer:

Hello.

• gels can melt during electrophoresis, the buffer can become exhausted, and different forms of genetic material may run in unpredictable forms.

• And the strengths could be that it separates based on size, it is relatively easy to do.

4 0
2 years ago
T/F. Autonomic ganglia are sights of synapse and information transmission from preganglionic to postganglionic neurons.
inessss [21]

Answer:

<u>True</u>

Explanation:

There are <u>two components of efferent/motor nervous system</u>.

1.<u>Autonomic Nervous System</u>

It innervates the<u> smooth muscles, glands and cardiac muscles and is under involuntary control. ANS is further divided into Sympathetic nervous system and parasympathetic nervous system.</u>

It is composed of<u> preganglionic neurons</u> and <u>postganglionic neurons</u>. <u>The axons of preganglionic neurons synapse on the cell bodies of postganglionic neurons. </u>

Autonomic ganglia of sympathetic nervous system form the paravertebral ganglia (long chains on either side of spinal cord) and autonomic ganglia of parasympathetic nervous system are located close to the organ which the fibers innervate.

<u>2. Somatic Nervous system</u>

It is responsible for<u> voluntary control of skeletal muscles and is composed of motor nerve and the innervated muscle.</u>

4 0
3 years ago
Enzymes are pH and temperature specific.Which model shows the relationship between the reaction of velocity of an enzyme and tem
sasho [114]

Answer:

The rate at which an enzyme catalyses a particular reaction is calculated by the amount of substrate being used up. The concept of a chemical reaction is that the substrate is converted into product with the help of an enzyme.

Rate of reaction= Amount of substrate utilized or product formed/ Time taken

Explanation:

Temperature is an important factor in the deciding of a rate of reaction. The velocity of an enzyme <u>increases with an increase in temperature</u> until and optimum temperature is achieved. After that, the velocity of an enzyme starts <em>decreasing</em> since the enzyme starts to get denatured.

Enzymes work best at a <em>specific pH</em>. If there are changes in pH, the active site of an enzyme gets modified and the rate of reaction decreases. Certain enzymes like pepsin which is in our stomach works at an acidic pH of 2.0.

4 0
3 years ago
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